CN102444274A - Fibre-reinforced polypropylene building template with hollow closed-pore structure - Google Patents
Fibre-reinforced polypropylene building template with hollow closed-pore structure Download PDFInfo
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- CN102444274A CN102444274A CN2011103282650A CN201110328265A CN102444274A CN 102444274 A CN102444274 A CN 102444274A CN 2011103282650 A CN2011103282650 A CN 2011103282650A CN 201110328265 A CN201110328265 A CN 201110328265A CN 102444274 A CN102444274 A CN 102444274A
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Abstract
A fibre-reinforced polypropylene building template with a hollow closed-pore structure is disclosed, and is composed of an upper panel (1), a lower panel (1) and a core material between the two panels (1), wherein the core material is composed of a core plate (2) and columnar empty grids (3) having the same geometrical shape and closely arrayed or sparsely arrayed on the both surfaces of the core plate. The building template has high specific strength, high specific stiffness, a static load per square meter greater than 120 T, and an apparent density of only 0.5-0.75, so that the material consumption can be saved by 25-50% under the precondition of no degradation of the mechanical properties of the material. The building template is light in relative weight, convenient in operation, non-absorbent, mildew-proof, non-deformable, and long in service life. The building template is finished on the same production line, so processing efficiency is high and energy consumption can be saved by over 40%.
Description
One, technical field
The present invention relates to a kind of construction formwork, specifically a kind of TRPP construction formwork with hollow hole-closing structure.
Two, background technology
Construction formwork is the important tool of concrete structure engineering construction.The expert points out that in the cast-in-place concrete structure engineering, form work engineering generally accounts for the 20-30% of concrete structure engineering cost, accounts for the 30-40% of the engineering amount of labour used, accounts for about 50% of the duration.Mould plate technique directly influences quality, cost and the benefit of engineering construction, so it is an important content that promotes China's Building technology progress.
The average annual production scale speedup of 2011-2012 China construction formwork industry will be about 15%; To the end of the year 2012, China's construction formwork industry output will reach about 300,000,000 square metres.
China's template market template material mainly is steel form and wood plywood template, annual 3000000 tons of the steel that consume, and the trees of felling are equivalent to hundreds thousand of hectares of area of woods.The huge resource consumption of construction formwork is given resource and environment band immense pressure.Recent two decades comes, and plastic formwork and Wood-plastic formwork occur, but because of construction formwork belongs to " structural " material, goods is generally solid construction, and mechanical index such as its intensity of hollow plastic or Wood-plastic formwork and modulus are difficult to reach the template standard requirement.
Three, summary of the invention
The present invention aims to provide a kind of TRPP construction formwork with hollow hole-closing structure to substitute solid plastic building template, and technical problem to be solved is that this template should satisfy the high strength of construction formwork technical standard order, the mechanical property of high-modulus.
The TRPP construction formwork with hollow hole-closing structure that the present invention is alleged is meant that this template is made up of compound core between upper and lower panel 1 and the two panels; Described core is made up of 3 in the column space of the same geometry of a central layer 2 and two sides dense arrangement thereof, after core is compound by upper and lower panel 1, just constitutes the hollow hole-closing structure.The cross section in column space 3 can be triangle (comprising equilateral triangle), quadrangle (comprising square), pentagon (comprising regular pentagon), hexagon (comprising regular hexagon) or circle etc.Described dense arrangement has two implications, and the one, tight formula, promptly post and post are close to each other, and the 2nd, density type, the interval (8-40mm) that differs in size is promptly arranged and separate between post and the post.
The material of upper and lower panel is the mixed material (I) of TRPP resin and auxiliary agent preparation in this construction formwork, and the material of core is the Wood-plastic material (II) by the acrylic resin preparation.
Each component of mixed material (I) has following weight portion:
Wood fiber, synthetic fibers and short glass fiber are not zero simultaneously.
Said wood fiber is the wooden of draw ratio 3-20, diameter 0.01-0.2mm or like non-wooden strings such as stalks.
Said short glass fiber is meant that length is the glass of draw ratio 5-50, diameter 0.01-0.2mm.
Said synthetic fibers are meant synthetic fibers such as PET polyester fiber of draw ratio 5-50, diameter 0.01-0.2mm etc.
Described modified talc powder is meant that French chalk stirs the French chalk that the surface that obtained in 15-30 minute coats activation with 2-5% (in the mass percent of French chalk, down together) coupling agent, 2-5% stearic acid down in 110-130 ℃.
Each component of Wood-plastic material (II) has following weight portion:
Acrylic resin during wood is moulded can use other thermoplastic materials polyolefin to replace, like polyvinyl, polyvinyl chloride etc.
Described wood powder is selected from 40-100 purpose wood powder, powder of straw or chaff powder.
Modified talc powder is the same.
The processing method of this construction formwork has two kinds; First method is extrusion molding at first; Be about to mixed material (I) and directly extrude upper and lower panel 1 in 170-195 ℃ with double screw extruder with a pair of even surface roll mould; Wood-plastic material (II) directly uses to have a pair of cross section and extrudes core as the double screw extruder of polygon or circular die in 170-195 ℃, and core is made up of 3 in the column space of same geometry central layer 2 and two sides dense arrangement thereof; Two-way then compound fixing, after after cooling, finalizing the design, cut into the template of certain specification.
Second method is referred to as two-step method, at first with mixed material (I) and Wood-plastic material (II) respectively granulation obtain the core pellet that panel pellet that panel machining uses and processing core are used.Be about to each component and mix the back with double-screw extruding pelletizing machine extruding pelletization, obtain panel pellet and core pellet respectively in 100-130 ℃ of high-speed stirred.Extrusion molding then; Be about to the panel pellet and extrude upper and lower panel 1 in 170-195 ℃ with extruder with a pair of even surface roll mould; The core pellet uses to have a pair of cross section and extrudes core as the extruder of polygon or circular die in 170-195 ℃, and core is made up of 3 in the column space of same geometry central layer 2 and two sides dense arrangement thereof; Two-way compound fixing after the extrusion molding, the upper and lower panel of extruding 1 is exceptionally straight and compound after the press polish heat-sealing machine is fixed formation sheet material in 170-185 ℃ of heat seal, after after cooling, finalizing the design, cut into the template of certain specification with core through the tractor tension.
This construction formwork is because of having hollow structure, and apparent density has only 0.5-0.75, compares with traditional Wood-plastic formwork of same size; Materials are saved 25-50%, and are in light weight, handled easily; Reduce working strength of workers greatly, do not absorb water, do not go mouldy, every square meter static load reaches more than the 120T also indeformable.The moulding of this construction formwork, fixing and typing are accomplished on same production line, and working (machining) efficiency is high, and energy consumption is practiced thrift more than 40%.
This construction formwork relatively sees the following form with solid wood plastic composite building form board main performance:
This construction formwork and solid wood plastic composite building form board main performance comparison sheet:
| MOR MPa | Modulus of elasticity MPa | Hardness (Shao Shi) | Remarks | |
| Industry standard | ≥20 | ≥1800 | ≥50 | ?lv-t1613-2004 |
| Wood plastic composite template (solid slab) | ≥25 | ≥2000 | ≥60 | |
| Hollow construction formwork of the present invention | ≥30 | ≥2500 | ≥60 |
This template long service life can be had enough to meet the need 30-50 time in the construction use.It is recyclable to scrap the back, can be used for processing new construction formwork after crushed.
Four, description of drawings
Fig. 1 is a cylindrical, hollow closed pore architectural template structure sketch map.
Fig. 2 is a cylindrical space core material structure sketch map.
Fig. 3 is a triangle hollow closed pore architectural template structure sketch map.
Fig. 4 is a triangle space core material structure sketch map.
1 is panel among the figure, and 2 is central layer, and 3 is the column space.
Five, the specific embodiment
In conjunction with accompanying drawing, be arranged as routine non-limiting examples narration as follows with the tight formula of two step method and column space:
The preparation of embodiment 1 cylindrical, hollow closed pore construction formwork
(1) gets polypropylene, short glass fiber, modified talc powder, stearic acid, zinc stearate, alkali lead sulfate, Tissuemat E, each 100,25,10,3,2,0.2,3,10 weight portion of haloflex successively; Mix the back with parallel double-screw extruding granulator extruding pelletization in 100-130 ℃ of high-speed stirred, obtain the panel pellet.
(2) get polyvinyl, wood powder fiber, modified talc powder, stearic acid, zinc stearate, alkali lead sulfate, Tissuemat E, each 100,110,20,3,2,0.3,3,12 weight portion of haloflex successively; Mix the back with parallel double-screw extruding granulator extruding pelletization in 100-130 ℃ of high-speed stirred, obtain the core pellet.
(3) above-mentioned core pellet is extruded core through a pair of extruder with cylindrical structural mould in 170-195 ℃, as shown in Figure 2; The panel pellet is extruded upper and lower panel through extruder with a pair of even surface roll mould in 170-195 ℃, exceptionally straight back of upper and lower panel traction and core is compound, be shaped into construction formwork through the press polish heat-sealing machine in 175-180 ℃ of heat seal again.As shown in Figure 1.
Embodiment 2: with the chopped glass fiber of 25 parts of wood fiber alternate embodiments 1, other are with embodiment 1.
Embodiment 3: with the chopped glass fiber of 20 parts of PET polyester fiber alternate embodiments 1, other are with embodiment 1.
Embodiment 4: with the chopped glass fiber of 5 parts of wood fibers, 10 parts of PET polyester fibers and 15 parts of chopped glass fiber alternate embodiments 1, other are with embodiment 1.
The preparation of embodiment 5 triangle hollow closed pore construction formworks
(1) gets polypropylene, short glass fiber, modified talc powder, stearic acid, zinc stearate, alkali lead sulfate, Tissuemat E, each 100,20,15,3,2,0.2,3,8 weight portion of haloflex successively; Mix the back with parallel double-screw extruding granulator extruding pelletization in 100-130 ℃ of high-speed stirred, obtain the panel pellet.
(2) get polyvinyl, wood powder fiber, modified talc powder, stearic acid, zinc stearate, alkali lead sulfate, Tissuemat E, each 100,120,15,3,2,0.3,3,8 weight portion of haloflex successively; Mix the back with parallel double-screw extruding granulator extruding pelletization in 100-130 ℃ of high-speed stirred, obtain the core pellet.
(3) above-mentioned core pellet is extruded core through a pair of extruder with triangular structure mould in 170-195 ℃, as shown in Figure 4; The panel pellet is extruded upper and lower panel through extruder with a pair of even surface roll mould in 170-195 ℃, exceptionally straight back of upper and lower panel traction and core is compound, be shaped into construction formwork through the press polish heat-sealing machine in 175-180 ℃ of heat seal again.As shown in Figure 3.
Embodiment 6: with the chopped glass fiber of 30 parts of wood fiber alternate embodiments 5, other are with embodiment 5.
Embodiment 7: with the chopped glass fiber of 20 parts of PET polyester fiber alternate embodiments 5, other are with embodiment 5.
Embodiment 8: with the chopped glass fiber of 5 parts of wood fibers, 10 parts of PET polyester fibers and 15 parts of chopped glass fiber alternate embodiments 5, other are with embodiment 5.
Claims (3)
1. TRPP construction formwork with hollow hole-closing structure; It is characterized in that: this construction formwork is made up of the upper and lower panel (1) and the middle compound core by Wood-plastic material processing of TRPP process of resin, and described core is arranged by the tight formula of central layer (2) and two sides thereof or the column space (3) of the same geometry that density type is arranged is formed.
2. construction formwork according to claim 1 is characterized in that: described column space (3) is for cylindrical.
3. construction formwork according to claim 1 is characterized in that: described column space (3) is a triangle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110328265.0A CN102444274B (en) | 2011-10-26 | 2011-10-26 | Fibre-reinforced polypropylene building template with hollow closed-pore structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110328265.0A CN102444274B (en) | 2011-10-26 | 2011-10-26 | Fibre-reinforced polypropylene building template with hollow closed-pore structure |
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| CN102444274A true CN102444274A (en) | 2012-05-09 |
| CN102444274B CN102444274B (en) | 2014-02-12 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005045158A1 (en) * | 2003-10-07 | 2005-05-19 | M.A.S. Systeme Gesellschaft für Kunststoffprodukte mbH | Formwork panel with a honeycomb core |
| TR200601395U (en) * | 2006-03-24 | 2006-05-22 | Ali̇ Turgut | PVC based construction formwork. |
| CN1948665A (en) * | 2005-10-10 | 2007-04-18 | 四川自强科技有限公司 | Wood plastic composite material building mould board, its preparation method and use |
| CN1987018A (en) * | 2006-12-18 | 2007-06-27 | 徐肖虎 | Wood-plastic formwork for construction engineering |
| CN101353460A (en) * | 2008-09-11 | 2009-01-28 | 丹阳市华东工程塑料有限公司 | Environment-friendly type micro-foaming polypropylene sheet and preparation thereof |
| CN201802062U (en) * | 2010-09-03 | 2011-04-20 | 三河市燕郊创新汽车模具有限公司 | Honeycomb sandwich glass steel and plastic building template |
| CN201865332U (en) * | 2010-05-10 | 2011-06-15 | 许文涛 | Novel wood-plastic composite building framework |
| CN202248853U (en) * | 2011-10-26 | 2012-05-30 | 高雁峰 | Fiber reinforced polypropylene building template with hollow closed-cell structure |
-
2011
- 2011-10-26 CN CN201110328265.0A patent/CN102444274B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005045158A1 (en) * | 2003-10-07 | 2005-05-19 | M.A.S. Systeme Gesellschaft für Kunststoffprodukte mbH | Formwork panel with a honeycomb core |
| CN1948665A (en) * | 2005-10-10 | 2007-04-18 | 四川自强科技有限公司 | Wood plastic composite material building mould board, its preparation method and use |
| TR200601395U (en) * | 2006-03-24 | 2006-05-22 | Ali̇ Turgut | PVC based construction formwork. |
| CN1987018A (en) * | 2006-12-18 | 2007-06-27 | 徐肖虎 | Wood-plastic formwork for construction engineering |
| CN101353460A (en) * | 2008-09-11 | 2009-01-28 | 丹阳市华东工程塑料有限公司 | Environment-friendly type micro-foaming polypropylene sheet and preparation thereof |
| CN201865332U (en) * | 2010-05-10 | 2011-06-15 | 许文涛 | Novel wood-plastic composite building framework |
| CN201802062U (en) * | 2010-09-03 | 2011-04-20 | 三河市燕郊创新汽车模具有限公司 | Honeycomb sandwich glass steel and plastic building template |
| CN202248853U (en) * | 2011-10-26 | 2012-05-30 | 高雁峰 | Fiber reinforced polypropylene building template with hollow closed-cell structure |
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| CN102444274B (en) | 2014-02-12 |
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